all? method in empty array should return false
|ruby -v:||ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.3.0]||Backport:||1.9.3: UNKNOWN, 2.0.0: UNKNOWN|
#3 Updated by Alexey Muranov almost 2 years ago
Since commenting on the other thread, i have leant that the proposed interpretation of the "for all" quantifier is apparently called "existential import" and apparently was a matter of debate in the 19th century (http://en.wikipedia.org/wiki/Syllogism#Existential_import for example).